.parallax {
  /*background-image: url(../../../images/backgrounds/monstruo-estudio-574.jpg);*/
  /* Set a specific height */
  min-height: 500px; 
  /* Create the parallax scrolling effect */
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  width: 100%;
  float: left;
}

.fondoNormal{
  /*background-image: url(../../../images/backgrounds/monstruo-estudio-574.jpg);*/
  background-repeat: no-repeat;
  background-position: center center;
  background-attachment: fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  height: 100%;
  width: 100%;
  z-index: -1;
  position: fixed;
}
.fondoTransparent{
  /*background-image: url(../../../images/backgrounds/monstruo-estudio-574.jpg);*/
  background-repeat: no-repeat;
  background-position: center center;
  background-attachment: fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  height: 100%;
  width: 100%;
  opacity: 0.6;
  z-index: -1;
  position: fixed;
}

.animation-element.slide-left {
  opacity: 0;
  -moz-transition: all 500ms linear;
  -webkit-transition: all 500ms linear;
  -o-transition: all 500ms linear;
  transition: all 500ms linear;
  -moz-transform: translate3d(-100px, 0px, 0px);
  -webkit-transform: translate3d(-100px, 0px, 0px);
  -o-transform: translate(-100px, 0px);
  -ms-transform: translate(-100px, 0px);
  transform: translate3d(-100px, 0px, 0px);
}

.animation-element.slide-left.in-view {
  opacity: 1;
  -moz-transform: translate3d(0px, 0px, 0px);
  -webkit-transform: translate3d(0px, 0px, 0px);
  -o-transform: translate(0px, 0px);
  -ms-transform: translate(0px, 0px);
  transform: translate3d(0px, 0px, 0px);
}

.animation-element.slide-left {
  opacity: 0;
  -moz-transition: all 500ms linear;
  -webkit-transition: all 500ms linear;
  -o-transition: all 500ms linear;
  transition: all 500ms linear;
  -moz-transform: translate3d(-100px, 0px, 0px);
  -webkit-transform: translate3d(-100px, 0px, 0px);
  -o-transform: translate(-100px, 0px);
  -ms-transform: translate(-100px, 0px);
  transform: translate3d(-100px, 0px, 0px);
}

.animation-element.slide-left.in-view {
  opacity: 1;
  -moz-transform: translate3d(0px, 0px, 0px);
  -webkit-transform: translate3d(0px, 0px, 0px);
  -o-transform: translate(0px, 0px);
  -ms-transform: translate(0px, 0px);
  transform: translate3d(0px, 0px, 0px);
}